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SDS-03 Potassium (1/5) Safety Data Sheet Potassium Silver Cyanide

Created: May. 21, 2007 Revised: Nov. 01, 2016

1. Chemical Articles and Company Information Name of Chemical Article: Potassium Silver Cyanide Company Name: Toyo Chemical Industrial Co., Ltd. Address: 2-26-13, Naka-Izumi, Komae-City, Tokyo Tel.: +81-3-3489-5152 Fax: +81-3-3488-1706 Emergency Contact: As above Recommended Applicationspp and Use Restrictions: Silver plating

2. Summary of Hazards GHS Classification Damage to health Acute (oral) toxicity Class 2 Skin corrosiveness and irritation Class 3 Critical injury to eyes and eye irritation Class 1 SSpecific ifi marker k organ and d systemic i toxicity (repeated exposure) Class 2 (Skin and respiratory organs)

GHS Label Elements Picture descriptions:

Cautionary terms: Danger Hazard information: Poisonous if ingested Mild skin irritation Critical eye injury Risk of organ (skin and respiratory organ) damage due to long-term or repeated exposure. Cautions Safety Measures: When using the product, do not eat, drink, or smoke. Wear protective gloves, goggles, and face mask. Prevent contact with eyes, skin, and clothing. Do not inhale the dust. Wash hands thoroughly after handling. Emergency Measures: If the substance contacts the eye, irrigate with thoroughly for several minutes. If contact lenses can be removed easily, remove and wash them. If eye i irritationrritation pers persistsists, consu consultlt a p physicianhysician an andd rece receiveive treatment. treatment If clothing is spattered, promptly remove and isolate all soiled clothing. If ingested, rinse out the mouth, and immediately consult a physician for treatment. If you feel unwell, consult a physician to receive diagnosis and treatment. Storage: Lock the storage location. Disposal: If discarding contents or containers, entrust to a specialized waste disposal company. Other hazards: Not available

3. Composition and Component Information Single Substance or Mixture: Single Substance Chemical name or general name: Potassium silver cyanide (I) Another name: - Concentration or concentration range: 100%

Ver. GHS-09 SDS-03 Potassium Silver Cyanide (2/5)

Molecular formula (molecular weight): K[Ag(CN)2] (199.01) Chemical characteristics + - (rational or structural formula): K [NC- Ag-CN] CAS No.: 506-61-6 Reference numbers in gazetted list in japan(CSCL and ISHL): 1-1088 Impurities and stabilization aadditivesdditives t thathat contr contributeibute to the classification: No information

4. Emergency Measures If inhaled: If you feel unwell, consult a physician to receive diagnosis and treatment. Adhesion to skin: If skin irritation occurs, consult a physician and receive treatment. Contact with eyes: If the substance contacts the eye, irrigate with water thoroughly for several minutes. If eeyeye irritation ppersistsersists, consult a pphysicianhysician and receive treatmenttreatment.. If ingested: Rinse mouth. If you feel unwell, consult a physician to receive diagnosis and treatment. The most important sign of an acute symptom and the tardive symptom and Eye pain, major burns, burning sensation, headache, dizziness, nausea, loss of symptom: consciousness, respiration paralysis, convulsions, , vomition, stopped respiration Protection of people implementing emergency measures: Rescuers should wear suitable protective equipment according to the circumstances. Special precautions for physicians: No information

5. Measures during Extinguishants: Water spray, powder, and dry sand Extinguishants that must not be used: (The cyanide gas of the deadly might be generated.) Characteristic dangers: Strong heat causes highly toxic gas to be emitted. When highly-concentrated contact it and mix it, hydrocyanic (gas) of the deadly ppoisonoison combustibilitycombustibility occurs.occurs. Air-fuel mixture with the air occurs in the sealing up space. Inflammation might be caused to skin and eyes by contact.

Characteristic extinguishing methods: Promptly move containers in the vicinity of the to a safe location. If moving is not possible, scatter water on the containers and their surroundings to cool. If ignition occurs, douse the fire using copious amounts of water. Protection of firefighters: Under fierce heat, highly toxic hydrogen cyanide gas is emitted, so fight fires from upwind, and wear pqpprotective equipment such as a or respirator. p Keep upwind all personnel unnecessary to disaster prevention activities.

6. Measures during Leaks Physical precautions, protective The worker wears a tool for appropriate protection (in item of "8. Exposure Avoidance and equipment, and measures during Protection Measures" reference) and avoids clothes, contact and inhalation to skin. emergencies: Touch the leak thing and do not walk the inside. Cordon off the periphery of the dispersal area to prohibit the entrance of personnel. Prohibit the entrance exceptexcept the ppersonerson concerned.concerned.

Environmental precautions: Avoid discharging into the environment. Methods and materials for contamination and methods and materials for cleaning up: No information Collection and neutralization: The leak thing that sweeps it on an airtight container, and was collected is disposed later. Preventing secondary accidents: Prevent inflow to drainage ditches, sewers, cellars, or sealed locations.

7. Handling and Storage Precautions Handling Technical measures: Install local exhausters, and eye and hand washing facilities, in the handling locations. Ideally, handle in locations with local exhausters and overall ventilators. Wear protective gloves, goggles, and face mask.

Ver. GHS-09 SDS-03 Potassium Silver Cyanide (3/5) Precautions for safe handling: Prohibit the use of high-temperature devices, sparks, and naked flames in the vicinity. When using the product, do not eat, drink, or smoke. Do not touch, inhale, or drink. Prevent contact with eyes, skin, and clothing. Do not inhale dust, fumes, or mist. Use only outdoors or in a well-ventilated area. Wash hands thoroughly after handling. IfIf not t usi ng d elib erate tl y, avoid di sch argi ng i nto t t thhe envi ronment. t Contact evasion: In item of "10. Stability and Reactivity" reference. Storage Safe storage conditions: Securely seal the containers, and store in a well-ventilated, cool location. Isolate from acids and strong oxidants during storage. Avoid storing with foodstuffs. Lock the storage location. Technical measures:No information Container and packing materials: Airtight containers (glass, polyethylene, polypropylene, etc.)

8. Exposure Avoidance and Protection Measures Control concentration: 3mg/m3 (as CN) Tolerable concentration: Japan Society for Occupational Health 0.01mg/m3 (as Ag) (2015) 5mg/m3 (as CN) (Max. tolerable concentration) ACGIH (2013) TWA 0.01mg/m3 (as Ag) STEL 5mg/m3 (as CN) Equipment measures: Install local exhausters, and eye and hand washing facilities, in the handling locations. Protective Equipment Respirator: Poison masks (respirator during fires), and dust masks Hand protective equipment: Wear protective gloves. (Rubber gloves, etc.) Eye protective equipment: Wear eye protective equipment. (Goggles, etc.) SkinSkin an andd b bodyody pro protectivetective equ equipment:ipment: Wear protective face equipment , clothing , and protective shoes , etc .(Protective clothing , protective boots, etc.)

9. Physical and Chemical Properties Physical properties Shape: Powder Color: White Odor: Odorless in its dryy, state, but if wet, , smells faintly y of . Odor threshold value: No information pH: when dissolved in water. and : No information Boiling point, initial boiling point, and boiling range: No information Ignition point: No information Vaporization speed (butyl acetate=1): No information BurnabilityB bili (( lid and d gas): ) Nif No information i Explosion range: No information Vapor pressure: No information Vapor (vapor=1): No information Specific gravity (density): d2.364 : Water: 20ºC 25g/100g n-Octanol/water partition coefficient: No information Spontaneous ignition temperature: No information Dissolution temperature: No information Viscosity: No information

Ver. GHS-09 SDS-03 Potassium Silver Cyanide (4/5) 10. Stability and Reactivity Reactivity: No information Stability: Does not change in light when dry. Possibility of harmful reactions: Highly toxic and flammable hydrogen cyanide gas is emitted due to contact with acid or heat dissolution. Conditions to be avoided: Light, heat, acids, and oxidants Incompatible substances: Strong oxidants HazarH dous degra da ble organi sms:H Hy drogen cyan ide and ni ittrogen oxid es

11. Harmfulness Information Acute toxicity Oral: Rat oral: LD50; 20.9mg/kg Pass; skin: No data available Inhalation:Gas The definition of GHS is a . Inhalation:Steam The definition of GHS is a solidsolid.. Inhalation:Dust,Mist No data available Skin corrosiveness and irritation: Severe skin irritation. Skin irritation: Rabbit; 500mg/24hr severe Critical injury to eyes and eye irritation: Critical eye injury. Eye irritation: Rabbit; 0.25mg/24hr severe Respiratory organ sensitivity: No data available Skin sensitivity: No data available Germ-cell mutagenicity: No data available Carcinogenicity: No data available Reproductive toxicity: No data available Specific marker organs and systemic toxicity (single exposure): No data available Specific marker organs and systemic toxicity (repeated exposure): Risk of organ (skin and respiratory organ) damage due to long-term or repeated exposure. Inhalable respiratory organ harmfulness: No data available

12. Environmental Impact Information Ecotoxicity Aquatic environmental harm It is toxic and has effect to for the hydrosphere environment creature, but cannot (acute hazard): classify it because it is lacking in data. Aquatic environmental harm It is toxic and has effect to ecosystem for the hydrosphere environment creature, but cannot (long-term hazard): classify it because it is lacking in data. Hazard to the ozone layery : The materials concerned are not listed byy an affiliated book of Montreal Protocol.

13. Disposal Precautions: Residual waste: Collect the silver using a roasting and reduction process, or an precipitation process. During roasting, gasses containing CN are emitted, so do not roast using an incinerator without cleaning equipment. (Ideally, entrust to a specialized company.) Dirty containers and packaging: Suitably process containers according to the relevant regulations and local government standards. WhenWhen di disposingsposing o off emp emptyty con containerstainers, ma makeke sure t too di discardscard th thee con contentstents comp completelyletely.

14. Shipping Precautions International Regulations UN No.: 1588 Proper Shipping Name: , inorganic, solid Class: 6.1 Sub Risk: - Packing : II Marine Pollutant: P Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code: No

Ver. GHS-09 SDS-03 Potassium Silver Cyanide (5/5) Japanese Regulations Land Regulations Information: Obey Poisonous and Deleterious Substances Control Law regulations. Maritime Regulations Information: Obey Ship Safety Law regulations. Aviation Regulations Information: Obey the Civil Aeronautics Law. Special Safety Measures: During transport, avoid direct sunlight, and load so that the containers are not damaged, corroded, or leaking, and secure the load to prevent toppling. Do not transport together with or livestock feed. Yellow card display is required during transporttransport.

15. Applicable Laws Poisonous and Deleterious Substances Control Law: Poison not for pharmaceutical use Industrial Safety and Health Law: Notifiable substance (Article 57-2, government ordinance Article 18-2 attached table No. 9- 137) PRTR Law: Class 1 designateddesignated chemical substance ((attachedattached table 11-82 82)) Water Pollution Control Act: Harmful Substances (Law Art.2, Enforcement Order Art.2, Ordinace Designating Wastewater Standards Art.1) Marine Pollution Prevention Law Pollutant Release and Transfer: Class 1 Regulations for the carriage and storage of in ship: Poison (P) (class 2) Civil Aeronautics Act: Poison (class 2) Act on Port Regulations: Poison

16. Other Information Bibliography: GHS classification results database: NITE website GHS model SDS information: JISHA website guidebook (Revised 2003) Collection of Poisonous Materials Standard Notifications DictionaryDictionary o off Ch Chemistryemistry (1987 30th pr printing:inting: K Kyoritsuyoritsu Sh Shuppan)uppan) 16112 Chemical Products (2012 The Chemical Daily)

*Caution: Hazard and harmfulness evaluations were created using the data and information available at the current time, but is not necessarily thorough, so handle with care.

Further, the data and evaluations described herein are not in any way guaranteed. The descriptions refer to normal handling, so for specialspecial h handlingandling, fi firstrst i implementmplement sa safetyfety measures con conformingforming t too th thee new app applicationlication an andd me methodsthods o off use. use

This MSDS is translated into English.(Original version is Japanese)

Ver. GHS-09